Apparatus for purifying water.



No. 656,33]. Patented Aug. 2|, I900. H. STILLMAN. APPARATUS FOR PURIFYING WATER.

(Application filed Mar. 28, 1900.)

4 Sheets-Silent I.

(No Model.)

WITNESSES:

In: warns PETERS co. PHOTO'UTNO" wAsnmm'ou. o. c.

Patented Aug. 2|, I900. H. STIQLMAN. APPARATUS FOR PURIFYING WATER.

(Application filed Mar. 28, 1900.)

4 She ets-Sheat 2.

(No Model.)

WITNESSES:

0.v wnsnwaron a c No. 656,33I. Patented Aug. 2|, I900.

H. STILLMAN. APPARATUSFORJURIFYING WATER. (Application filed Mar. 28,1900 (No Model.) 4' $heetsSheet s.

WITNESSES: INVENTOR,

m: mums Ptrznwco, PHOTD-UTNO" WASNINGTON, D. c.

No. 656,33l. Patented Aug. 2|, I900.

v H. STILLMAN.

APPARATUS FOR PURIFYING WATER.

(Application filed Mar. 28, 1900.)

4 Sheets-Sheet 4.

(N9 Indol.)

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WITNESSES: m/ MfilZVENTOR/W i M0 Art).

UNITED STAT S PATENT OFFICE.

HOWARD sTiLLMAN, OFSAORAMENT'O, OALIFQltNlA;

APPARATUS F R-PURIFYINIG WATER.

SPEGIFICATIONforming part of Letters Patent No..656,331, dated August21, 1900.

Application filed llllarch 28,1900.

To all whom it may, concern; I A

Be it known that I, HOWARD STILLMAN, of Sacramento, in the county ofSacramento and State of California, have'invented a certain new anduseful Improvement in Automatic Water-Treating Apparatus, of which improve ment the followingis a specification.

My present invention relates to apparatus for treating water withchemicals for the purpose of clearing it of'incrustating matter and forseparating or settling the treated water and isan improvement upon thatforwhich Letters Patent of the United States, No.

595,793, were granted and issued to me under date of December 21, 1897.

The ob'ects of my invention are to effect a simplification andeconomization of the apparatus, to render its operation automatic, and

to attain a thorough mixture of. the contents of the circulating-tankand the prevention of the deposit of precipitated matter therein.

The improvement is hereinafter fully set forth.

In the accompanying drawings, Figure 1 is a view in elevation of awater-treating ape paratus, illustrating an application of my in;vention; Fig. 2, a plan or top view of the same; Fig. 3, a Verticalcentral section, an an .enlarged scale, through the mixing-vat,chemical-tank, and motor; Fig. 4, a similar section through thecirculating-tank, Fig. 5, a hori zontal section through the same at theline a, a of Fig. 4; Fig. 6, a Vertical central section through thefeed-regulator; Fig. 7, a horizontal section through. the same at theline b b of Fig. 6, and Fig. -8 a' horizontal section through the motor.

In the practice of my ,inventionl provide, as in myLetters Patent No.595,793 aforesaid, a supply-main 1, through which the water to betreated is forced under hydraulic pressure obtained either from apumping-station or a gravity-supply to a circulating-tank 22, and

of suit-able chemicals and to delivera solue Serial No. 10,476, (Nomodel.)

- :tion thereofto a chemical-tank 3, substantially similar to thelinetank set forth in Letters Patent No. 595,793 aforesaid. Thechemical-tank is closed by tight heads 6 and provided with afilling-pipe 7, which may becontrolled by a cock, and having at itsupperor receiving end a funnel 9, protected by a strainer 10. Asupply-pipe 3, controlled by a cock 36, leads from the mixing-tank 3 toa point above the funnel 9. A glass gage-tube 15, having an upperbleedercock 16 and a lower drain-cock 17, is connected 'to the outsideof the chemicaLtank, and it may also be provided with a suitablepressure-gage. An air-supply pipe 11, in which is fittedapressure-regulator 14, leads from an air-reservoir 27 or other sourceof compressed air to the chemicaltank for thepurpose of effecting thedischarge of the solution therefrom to the water-supply main.

The chemical-tank3is, as in Letters Patent No. 595,793, provided withmeans for agitating and mixing its contents, the same being preferablyin the form of a stirrer consisting of a vertical shaft 19, which passes'through a stuffing-box20 in the head of the tank and carries a seriesof stirring-blades. {Under my present invention the head of water in thesupply-main is utilized to rotate the stirrer, as well as to actuate anautomatic feed-regulator by which limited quantities of the solution ofchemicals are delivered at brief intervals from the chemical-tank to thewater in the main. To this end a motor 28 in the form of a water-wheelof the ordinary hurdy-gurdy type is fixed upon a shaft 129, which ismounted in bearings in a casing 30, having lateral nozzles or passages31,

passes on to the circulating and settling tanks. .a'stuffing-box in thecasing 30'and carries on The motor shaft 29 passes through its upper enda sprocket-wheel 32, which through a chain .belt 33, rotates a largersprocket wheel 34, fixed on the stirrer-shaft 19. A regulated supply ofchemical solution is delivered to the current of water flowing throughthe supply-main by a suitable automatic feedregulator which in theinstance exemplified is in the form of a hollow cylindrical valve 38,fixed upon a spindle 37 and provided with narrow peripheral ports oropenings 39. The regulator is fitted to turn freely in the casing 40, inwhich its spindle 37 is journaled and which is provided with a properstuffing-box for said spindle and is preferably fixed to the top of themotor-casing 30. A pipe 41 leads from the chemicaltank 3 to a nozzle orpassage on one side of the casing 40, which nozzle communicates'by anarrow port or slot 42 with the space-or chamber in which the regulator38 rotates, and a pipe 43 is connected to a nozzle on the opposite sideof the casing, which communicates with the regulator-chamber by a narrowport or slot 44. The opposite end of the pipe 43 is connected with thesupply-main 1. A spur-pinion 35, fixed upon the motor-shaft 29, engagesa corresponding gear 36 on the regulator-spindle 37 and imparts rotationthereto and to the connected feed-regulator. The ports 39 of theregulator register in its revolutions with the ports 42 44 of thecasing-nozzles, and at each revolution a limited quantity of chemicalsolution is discharged from the chemical-tank 3 into the water-supplymain, the discharging impulses being due to the overbalancingair-pressure in the chemical-tank derived from the air-reservoir 27through the air-supply pipe 11.

The specific form of automatic feed-regulator above described is "not anessential of my invention, as a corresponding automatic regulation ofthe supply of chemical solution may be effected by other mechanismactuated by the head of water in the supply-main. Thus, for example, asmall feed-pump of the ordinary plunger construction may be substituted,said pump being actuated by an eccentric fixed upon the motor-shaft 29and having a suction-pipe connected to the chemical-tank 3 and adeliverypipe leading into the supply-main 1. In such case the air-supplyto the chemical-tank, which might not in some locations be readilyobtainable, would be dispensed with, as the chemical solution would beinjected in regulated quantities by the forcing action of the pump,which for the purposes of my invention would constitute a mechanicalequivalent for the rotary valvular regulator which is herein describedand shown. 7

After being properly supplied with solution from the chemical-tank 3 thewater in the supply main 1 is delivered into and passed through acirculating-tank 22, which is preferably of cylindrical form, closed atits ends by tight heads 23 and strengthened by longitudinal brace orbraces 24. The'construction herein set forth presents the advantages ofbeing of simpler and less eXpensive construction than that of Patent No.

595,793 aforesaid and of being more readily cleansed and free fromobjection as to deposit of solid matter. The circulating-tank is dividedby transverse partitions 25, Which extend entirely across it, into aplurality of separate chambers or compartments, communication betweenwhich is afforded by short Vertical pipes fixed in the partitions andprovided with horizontal or downwardlyinclined elbows or nozzles 45. Asshown in Figs. 4 and 5, the nozzles of each partition are turned inopposite directions, so as to impart a rotary movement to the water asdischarged into the several compartments, and they are relativelyreversed on alternate partitions, so that the direction of movement ofthe water is reversed in alternate compartments. This reversal of themovement of the water substantially promotes the thorough mixture of thechemical solution therewith and also prevents the deposit ofprecipitated matter, allowing the same to pass on and assist in settlingthe treated water. After passing through the circulating-tank 22 thetreated water is discharged through a delivery-main into a settling orstorage tank 26, which may be of any suitable and preferred.construction and from which it is withdrawn for use from time to time asdesired. i

The apparatus herein set forth has been applied in practical service ina number of instances and has been found to satisfactorily comply withthe conditions and attain the results under and for which it wasdevised.

I claim as my invention and desire to secure by Letters Patent-- 1. Inan apparatus for the treatment of water, the combination of amotor-casing interposed in the water-main, a motor therein, achemical-tank, a connection between said tank and the motor-casing, anda valve in said connection operatively connected to the motor.

2. In an apparatus for the treatment of water, the combination of amotor-casing interposed in the water-main,a motor therein, achemical-tank, a connection between said tank and the motor-casing, arotary valve alternately opening and closing said connection, andoperative means between the motor and said valve.

3. In an apparatus for the treatment of water, the combination of awater-main, a chemical-tank, a connection between said main and tank, acompressed-air reservoir communicating with said tank to subject thecontentsthereof to pressure, and means controlled by the water-currentin said main for alternately opening and closing said connection.

4. In an apparatus for the treatment of water, the combination of awater-supply main, a chemical-tank, a stirrer fitted to 1'0 tate in saidtank, an automatic feed-regula= tor controlling communication betweenthe chemical-tank and water-supply main, a motor impelled by the currentof water in the supply-main, and operative connections between themotor-shaft and the stirrer and feed-regulator respectively.

5. In an apparatus for the treatment of water, the combination of awater-supply main, a chemical-tank, a stirrer fitted to retate in saidtank, an automatic feed-regulator controlling communication between thechemical-tank and water-supply main, a motor-case havinglateral passageseach communicating with a section of the supply-main, an impactwater-motor fixed on a shaft journaled in said casing, and operativeconnections between the motor-shaft and the stirrer and feed-regulatorrespectively.

6. In an apparatus for the treatment of Witnesses:

S. LUKE HOWE, CHAS. M. BECKWITH.

